Sheet-metal press



(No Model.)

' 2 Sheets-Sheet 1. E. J. DOLAN.

v SHEET METAL PRESS. No. 271,044. Patented Jan.23,188#3.

O 0 l O .o l A (No Model.) 2 Sheets-Sheet 2. E. J. DOLAN.

' SHEET METAL PRESS.

No. 271,044. Patented Jan.23, 1883.

N -Pawns. Phvlwlhhognphar, Wauhington. n. c

UNITED STATES PATENT Trina.

EDWARD J. DOLAN, OF PHILADELPHIA, PENNSYLVANIA.

SHEET-METAL PRESS.

SPECIFICATION formingpart of Letters Patent No. 271,044, dated January 23, 1883.

Application filed October 21,1882. (N0 model.)

the city and county of'Philadelphia and State of Pennsylvania, have invented an Improvement in Sheet-Metal Presses, of which the following is a specification.

My invention has reference to sheet-metal presses; and it consists in providing said presses with automatic mechanism whereby the metal to be formed or pressed into the de' sired shape is fed to the die and made to register accurately, as is more fully set forth in the following specification and shown in the accompanying drawings, whichform part thereof.

The object of my invention. is to provide power or t'oot presses of this class with suitable automatic feeding mechanism to properly and accurately feed the disks to the dies, where they are caused to be placed under the male die in perfect register. Heretofore in stamp ing up top or cover's for tin cans manytin disks were lost owing to bad registration, and much unnecessary expense was involved in the manufacture. By the use of my improvement all of these defects are entirely overcome and the capacity of the press is greatly increased.

In the drawings, Figure 1 is aperspective view of a press embodying my improvements. Fig. 2 is a sectional side elevation of the dies and automatic feed of same. Fig. 3 isa crosssection of same on line 00 as. Fig. 4 is an elevation of the mechanism adapted to actuate the feed arm or rod, and Fig. 5 is a sertion of a disk when stamped up into a tin-can cover.

A is the frame of the machine.

Bis the female die, and is secured to the base of the frame A.

O is the male die, and is guided vertically by a bearing on the frame A, and is reciprocated by means of lever D, rod D, and pedal E, or other equivalent and well-known devices. Surrounding the rear part of the die B is a curved plate, F, to the front of which is secured the feed-trough G, the bottom of whichis on a level with the top of the tin disk when in register between the dies, the said disk fitting into the annular space 1) around the opening in the die B.

Working through the end of the feed-trough G is a feed'rod, H, carrying on its inner enda head, H, which is made dovetailed, and slides in a groove, 9, in the bottom of the said feedtrough.

Located at one side of the press, and working in bearings M, is the rod J, the forward end of which is slotted, as at j. Working through this slot is the end of a pivoted lever,

I, the other end of which is pivoted to the feed rod H, and its movement controlled bya stop, 2'. The end of lever I, which extends through slotj, rests against the pin 7", and is kept in such position by a spring, K, whose tension is adjusted by a collar, 70. 4

L is a stop secured to rod J to limitits movement. Secured to rod J, and guided by an auxiliary rod, P, is a block, P, provided with an oblique cam-face, p. Pivoted to the rod or bar D is a cam-dog, D whose. lower leg, D is weighted to keep the upper end, which is provided with cam-face d, in working position.

D is a stop-pin, and d is a spring, which tends to keep the cam-dog in a normal position.

N is a spring which encircles the rod J, and one end of which rests against a pin, a, in said rod, and is adapted to return said rod to its original position after acting to feed a disk to the dies.

The operation is as follows: The feed-rod H being drawn entirely back, a tin disk, R, is dropped in the feed-trough Gr. Now, upon removing the pressure upon the pedal E, the male die commences to ascend, and as the arm or rod D is lowered the cam-dog D? strikes the cam-block P and pushes it forward quickly, thereby causing the rod J to move forward, compressing spring N and pushing in the feedrod H, thereby forcing the disk' B. under the spring-fingers 0,'attached to the foot 0, which in turn is secured to frame A by piece 0, which is made adjustable. These springs 0 hold the disk down in place in the annular groove or recess b, the rod H passing bea rod D ascends and the male die descends into the female die, pressing the tin into the shape shown in Fig. 5 or other form. As the rod 1) ascends the cam-dog oscillates without inoving the rod J. The spring K prevents any breakage of parts should a defective disk be .placed in the trough G. If the disk should be turned up, the foot 0 would turn it down and feed or guide it to the female die.

I do not limit myself to the exact construction shown, as the disk may be fed to the dies as the male die descends, and the feed mechanism may be modified in various ways without in any manner departing from my invention.

I am aware of the patent to Sumner, No. 206,907, of 1878, and claim nothing therein set forth as claimed.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a sheet-metal press, the combination of male and female dies with lever D, rod D, pawl D lug or block P, rod J, having slot j, guide M, springs N and K, collar k, lever I,

. rod H, and trough G, substantially as and for which the sheet is forced to keep. the said sheet metal down when passing'into said dies, and prevent its springingbaek, substantially as and for the purpose specified.

8. In a sheet-metal press, the combination of male and female dies, afeed-trough to guide the sheet metal to the dies, a reciprocating rod to force said metal sheets toward said dies, means controlled by the movements of the male die to actuate said feed-rod, and aspringfoot to prevent the sheet from springing back after being forced over the female die, said foot being provided with slot 0 and spring-fingers 0, substantially as and for the purpose specified.

4. In a press for crimping or forming sheet metal, the combination of the male and female dies, a feed-trough to guide the sheet metal to the dies, a reciprocating rod to force said sheet metal toward the dies, meansto keepthe sheet metal down upon the female die, means controlled by the reciprocations of the male die to actuate said feed-rod, and means to relieve the feed mechanism should the feed-passage become obstructed, substantially as and for the purpose specified.

5. The combination of female die B, male die 0, lever D, rod D, carrying pawl or dog D guide-trough G, plate F, rod H, lever I, rod J, spring N, and cam-block P, substantially as and for the purpose specified.

In testimony of which invention I hereunto set my hand.

EDWARD JAMES DOLAN.

Witnesses:

B. S. CHILD, Jr., 1%. A. GAVIN. 

